# num = 3
# def fun ():
#     num = 5
#     print('函数内局部变量num的值：', num)
#     fun()
#     print('函数外全局变量num的值：', num)

# num = 5
# def fun():
#     global  num
#     num += 1
#     print('函数值num的值：', num)
#     fun()
#     print('函数外num的值：', num)
# def outer():
#     num = 1
#     def inner():
#         nonlocal num
#         num = 2
#         print('inner函数中num的值：',num)
#         inner()
#         print('outer函数中num的值： ',num)
#         outer()
# stu = [{'num': '201801','name': '王五', 'score': 89},
#        {'num': '201802', 'name':'刘军','score': 95},
#        {'num': '201803','name': '李梦', 'score': 85}]
# stu.sort(key=lambda x: x['score'])
# for s in stu:
#     print('学号：',s['num'],'姓名：',s['name'],'成绩：',s['score'])
